Multimedia: Applied #4140 to v4.0
Removed jQuery Mobile references
Equalheight: add unit tests
Equalheight: visual update to working examples

1. Added border around equalized elements to make plugin behaviour
   more obvious.
2. Added plugin purpose statement.
Equalheight: minor performance tweaks
Merge pull request #4158 from pjackson28/removejqmreferences

Removed jQuery Mobile references
Merge pull request #4156 from LaurentGoderre/multimedia-fixes

Multimedia: Applied #4140 to v4.0
Lightbox / Overlay: Fixed border radius issue in iPad (fixes #4028)
Merge pull request #4160 from pjackson28/fixmodalsafariborderradius

Lightbox / Overlay: Fixed border radius issue in iPad (fixes #4028)
Merge pull request #4157 from patheard/equalheight

Equalheight: unit tests and minor tweaks